Abstract
This paper exposes a method of modelling and analysis to help verifying design iterations of non-cylindrical shaped floating wind technologies. In order to do so, the Morison based quadratic hydrodynamic drag forcing contribution within the HAWC2-WAMIT coupled model, is modified to account for a panel-based input geometry. The implementation is applied to the P80 platform, and a verification of the hydrodynamic responses is performed. A reduced load case analysis is carried out, in which floating wind technologies can be assessed efficiently during early stage design iterations. The final platform assessment includes the wind and wave coupled effect using three load cases from IEC 61400-3 standards. The results of the simulations show that the chosen cases provide significant information relating to the platform motions and the tower top acceleration, in order to provide feedback for later design iterations of the platform.
Highlights
In 2019, Europe installed 15.4 GW of new wind power capacity, 23.4% corresponding to offshore (1)
The P80 device is a semi-submersible technology with Wave Energy Converters (WEC) integrated into the floating platform
Each load case consists a range of conditions to be analysed, with each analysis being performed for multiple seeds, resulting in thousands of simulations
Summary
In 2019, Europe installed 15.4 GW of new wind power capacity, 23.4% corresponding to offshore (1). There are several competing design types of Floating Offshore Wind (FOW), but there is not a unique design. There is Equinor’s spar buoy type concept, which under the project name Hywind, in 2017 was the world’s first multi-unit FOW farm commissioned in Scotland with five 6MW turbines. IDEOL developed a patented concept under the name of Damping Pool R , which is a barge type, and the Windfloat foundation from Principal Power, is a semi-submersible type. The concept used as a case study in this paper is Floating Power Plant’s P80 device. The P80 device is a semi-submersible technology with Wave Energy Converters (WEC) integrated into the floating platform
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